XTX Topco’s STAK Inc STAK Stock Holding History

XTX Topco’s Portfolio STAK Stock Details STAK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$81.4K	Buy	+21,355	New	+$50.2K	﹤0.01%	3588
2026 Q1	–	Sell	-31,798	Closed	-$12.7K	–	4555
2025 Q4	$12.7K	Buy	31,798 +8,287	+35%	+$4.96K	﹤0.01%	3147
2025 Q3	$19.9K	Buy	+23,511	New	+$32.3K	﹤0.01%	2331

Other funds holding STAK

HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

SRL

Scientech Research LLC Jersey City, New Jersey $123M AUM 198.31% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

CIAM

Caitong International Asset Management Hong Kong $729M AUM 1,176.98% 1-Year Est. Return

XTX Topco's STAK Position: Q2 2026 in Review

XTX Topco opened a new position in STAK Inc (STAK) in Q2 2026: 21,355 shares worth $81.4K. The stake represents ﹤0.01% of the portfolio and ranks #3588 among its holdings. This is a return to the name: XTX Topco previously reported a position in STAK as recently as Q4 2025.

XTX Topco first reported a position in STAK in Q3 2025 and has held it in 3 quarters since. 8 funds tracked by Wall St. Rank hold STAK as of Q2 2026.

XTX Topco held 21,355 shares of STAK Inc worth $81.4K as of Q2 2026.
STAK Inc was a new XTX Topco position in Q2 2026.
STAK Inc made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #3588 holding.
XTX Topco first reported a position in STAK Inc in Q3 2025 and has held it in 3 quarters since.
8 funds tracked by Wall St. Rank held STAK Inc as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.